Apparatus for cutting paper or other material



Jan. 7, 1936. A. H. HAUPT 2,026,533

APPARATUS FOR CUTTING PAPER OR OTHER MATERIAL Filed Aug. 7, 1954 FIG].

Alberfus H.Haupi' Attorn ey Patented Jam. 7, 193 I 2,026,533 l UNITED STATES PATENT orncg- APPA BAT'US FOB CUTTING PAPER R OTHER MATERIAL Albertus Hendrik Haupt, Somerset wVest, Union of South Africa, assignor to Imperial Chemical lnnrciltuasgies Limited, a corporation of Great Application August I, 1934, Serial 'No. 738,886 In Great Britain August 10, 1933 y Claims. (01. 16466) This invention relates to an improved method Protruding from the surface of the roller 2 is a and apparatus for cutting paper or other sheet knife 5 which is in the form of a helix the angle material into predetermined lengths, particularly of which is the same as that to which it is dewhere the material is in the form of aband or sired to cut the material. I preferably use a 5 ribbon. blade inserted in a groove wider than the blade 5 My apparatus comprises a mechanically operand fastened into the roller by white or other ated rotary cutter whereby a strip or band or metal caulked into the remaining space in the ribbon of material is continuously cut into pieces groove. The blade or knife may, however, be of a required and-predetermined length, not at fastened in any other suitable manner such as right angles orpe'rpendicular to its length but by screws, dovetailing or welding, or it may be 10 obliquely into rhomboids or rhombs. formed integrally with the roller.

According to the present invention we provide Protruding from the surface of the roller l is a two rollers with parallel axes and carrying helihelical knife 6 similar'to 5 in the roller 2, but cal knives which are adapted to slice the mathe angle of the helix of knife 6 is slightly greater terial as it passes between the rollers, the angle than that of knife 5; for instancev if the helix 15 of the one helix being slightly greater than that of knife 5 is such that it will make one complete of the other. The helical knives have adjacent revolution in approximately 22 inches of length recesses to enable them to mesh. Theroller carthen I use a helix for knife 6 such that it will rying the helical knife of smaller angle is driven make a complete revolution in approximately 19 and the knife on this roller presses against the inches of length. 20 knife on the other roller and causes it to revolve Recesses 5a and 6a are provided to enable the in the opposite direction at the same time as knives to mesh. The action of these knives is the material is cut. The helical knives do not such that as roller 2 revolvesthe knife 5 pressing extend completely around the rollers, and interagainst knife 6 causes the roller l to revolve rupted gears are Provided to Convey t drive for part of a revolution, at the same time cutting to the other roller until the knives mesh once or shearing the material 1. The knives are not more. The rollers are cylindrical and are arnecessarily arranged radially but may be slightr d paral el to One another and adjacent to 1y offset; the centre of the channel in which the O e a he throughout their e t s- The macutters, are mounted may be offset one quarter t mto be cut i r w propelled w n of an inch, and the cutting edge of the cutter t e rollers d it Passes through it is 0011- may be offset three eighths of an inch from the tlnu u ly ut i t p s f t d s r d shap diameter parallel to the centre line of the chanand length. nel.

T n ur 01 y invention is illustrated in The further rotation of the roller I so that it the accomp ny g diagrammatic drawing. in may be in a position for the knife 6 to mesh which the rollers are Show S t t d horizontally with the knife 5 on roller 2 is accomplished by One above the other and in w means of a pair of interrupted gears fastened to gur 1 1S elevation o e cutting rollers the shafts 3 and 4, which gears are not shown showing the helical knives. l in the drawing.

Figur 2 i a d elevation of the rollers The material 1 is shown in Figure 2 unwinding 40 showing the material passing between them. ofi a roll of materials 8 and being drawn for- Fisure 3 is a p a vie of e material showing ward by the action of the rollers. th form of division Produced whitn the material The rollers may be made of such a size that enters the rollers at r g angles to the l they have a circumference or periphery of a In Figure 1 h t p roll r i shown touching length equal to the length of the cut off portion 45 resting on the lower roller The 10119! N5 of material required, so that as well as cutting fi ed t as fl 3 which s supported on bearings they at the same time act as feed rolls drawing (not shown) which may be of any well-known the material 1 forward from the roll 8 at the form. The roller 2 is fixed to shaft 4 which is required rate, but they may be so arranged that 50. l -@1 pp rted on bearings (not shown). The they do not grip the material which maybe fed bearings are preferably of a type which permits. between them by any known method of feeding of slight movement of the-shafts, so that the latsuch material. If desired the rolls may be reter maybe moved apart from one another. Shaft cessed over a portion of their circumference, so 4 is driven at a constant speed from any suitthat during a period of the rotation while the 65 able source of power. rolls are being driven by the gears the'material 2. An apparatus for cutting sheet material obliquely into sheets of predetermined length, which comprises a pair of rotatable, axially parallel, cooperating, helical knives, the angle of inclination, of one of said helical knives being the same as the angle to which it is desired to cut'the sheet material, and less than theangle of inclination of the other of said helical knives.

3. An apparatus forcutting sheet material obliquely into pieces of predetermined length, which comprises two parallel cylindrical rollers provided with helical knives having diiierent angles of inclination.

4. An apparatus obliquely into pieces of predetermined length, which comprises a pair 01' rotatable axially parallel cylinders, the first of which is provided with a peripheral, helical knife the angle of inclinasaid cylinders is provided with a cooperating, peripheral, helical knife the angle of inclination oi which is slightly greater than that of the helical knife of the first cylinder, the cooperation of the 16 respective helical knives being such that rotation imparted directly to the first cylinder causes the second cylinder to rotate at a. slightly greater speed.

5. An apparatus according to claim 4, in which 80 each cylinder is provided with a recess at the base of the helical knife.

ALBERTUS HENDRIX HAUPT.

for cutting sheet material 5 

